Hi Hua
I do not know the answer.
I did look at MSDS sheet at
https://sds.qiagen.com/ehswww/QIAGENwww/result/report.jsp?P_LANGU=E&P_SYS=4&P_SSN=10010&P_REP=00000000000000000003&P_RES=11412
It has some interesting facts. A very specific sounding 134.17 MW is one. The
fact that the material has a fairly low flash point of 79C, boiling point of
178C, and density of 1.1 are all listed. It says it is a substance not a
mixture. It is yellow.
With that and a high res instrument measurement or two one could likely nail
the structure. I would guess it goes into water but is on the non polar side.
You might make homeopathic levels of dilution on up and scan low to see if you
can see it. I always like to know the chemistry of what I use. The structure
would help. Some proteolysis inhibitors actually covalently modify the protein
and so would impact associated peptides, for example.
Have fun. Good luck.
Matt from phone
Rest of post
> On Nov 9, 2020, at 9:09 AM, Ding, Hua <email obscured>> wrote:
> Allprotect® Reagent (from Qiagen)